Blade tip cross-tone fan asymmetric stator design method considering intake distortion effect of BLI

A distortion effect and design method technology, applied in the direction of stators, mechanical equipment, engine components, etc., can solve problems that have not been verified, and achieve the effects of alleviating asymmetry, improving fan stage efficiency, and reducing flow loss

Active Publication Date: 2019-07-19
北航(四川)西部国际创新港科技有限公司
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Problems solved by technology

However, Gunn and Hall's work was based on a low-speed fan, while civil aircraft fans usually have a large bypass ratio, high speed and ultra-sonic blade tips. Whether the asymmetric stator optimization design is suitable for high-load fan stators has yet to be determined get verified

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  • Blade tip cross-tone fan asymmetric stator design method considering intake distortion effect of BLI
  • Blade tip cross-tone fan asymmetric stator design method considering intake distortion effect of BLI
  • Blade tip cross-tone fan asymmetric stator design method considering intake distortion effect of BLI

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Embodiment Construction

[0030] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present application. In addition, it should be noted that, for ease of description, only parts relevant to the present application are shown in the drawings.

[0031] It should be noted that, in the case of no conflict, the implementations in the present application and the features in the implementations can be combined with each other. Hereinafter, the present application will be described in detail with reference to the accompanying drawings and in combination with embodiments.

[0032] Here, the high-load transonic fan grade NASA Stage67 fan stator is taken as an example to illustrate the design method of the asymmetric stator of the tip transonic fan considering the BLI intake distortion effe...

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Abstract

The invention discloses a blade tip cross-tone fan asymmetric stator design method considering an intake distortion effect of BLI. The design method comprises the following steps that 1, stator bladesare divided into a distortion area and a non-distortion area in the circumferential direction according to the flow condition of the inlet of the fan stator under the condition of the distortion airinlet condition of the BLI; 2, optimization modification is carried out on the static blades which are divided into the distortion areas, and meanwhile, prototype design is kept on the static blades which are divided into the non-distortion area; and 3, the modified stator blades of the distortion area are combined the prototype designed blades of the non-distortion area to obtain the all-circumferential asymmetric stator blades.

Description

technical field [0001] The present application belongs to the field of compressor fan stator design, and in particular relates to a design method for an asymmetrical stator of a blade-tip trans-sonic fan considering Boundary Layer Ingestion (BLI for short). Background technique [0002] The integrated layout of flight and development is the trend of the next generation of civil aviation aircraft design. The layout of the propulsion system using the suction effect of the boundary layer, compared with the layout of the traditional power system, can theoretically reduce the fuel consumption rate of the aircraft by 5% to 10%, and is favored by major aviation research institutions. The aircraft using the BLI propulsion system sucks a part of the low-speed flowing boundary layer of the fuselage into the power system, reduces the exhaust speed, improves the propulsion efficiency, and thus reduces the overall fuel consumption of the aircraft. [0003] However, the BLI propulsion sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D9/04
CPCF01D9/041
Inventor 李秋实杨哲鹿哈男潘天宇
Owner 北航(四川)西部国际创新港科技有限公司
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